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Higher Study | Power Systems | Protective Relays

In which of the following equipment direct current is needed?
Transformer breaths in when
Essential features of switchgear are:
Translay relay is used for
Main purpose of using oil in oil circuit breaker is to:
Safety relay used in a transformer acts as
The key job of the relay is to
Thermal relays are used in
Earth fault relays are
A distance relay is one whose operation is based on measurement of:
A relay whose characteristic is modified by additional mechanical or electromagnetic procession is termed as
A 11 kV 100 MVA alternator is grounded through a resistance of 4 Ω. The C.T.s have a ratio of 500/5. The relay is set to operate when there is an out of balance current of 2 A. What percentage of generator winding will be protected by the percentage differential protection scheme?
When a supply voltage has been zero for a period of time in excess of 1 minute, the long duration voltage variation is considered as
In oxide film arrester, when heated, lead peroxide gets converted to:
There exist three terminals in a relay called C, NO, NC, in an application, it is desired that whenever the relay is active the load must be connected be supply, otherwise the load will be disconnected from supply. Which of the following connection type in relay will provide solution to the stated problem?
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